Tonga earthquakes

M4.8 earthquake 98 km NE of Hihifo, Tonga

A magnitude 4.8 earthquake struck 98 km NE of Hihifo, Tonga on Sat, Aug 7, 2021, 8:13 AM GMT+13 (19:13 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.8 135 km SW of Gataivai, Samoa. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.8 (mb), light
Local time
UTC
2021-08-06 19:13:11 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.239° S, 173.242° W
Region
Tonga
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 8.3 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
126°
Stations used
67

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.8 and up: 17 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 4.953 km NE of Hihifo, Tonga · 1878 days ago · 78 km deep · 46 km away
  2. 4.545 km N of Hihifo, Tonga · 1867 days ago · 67 km deep · 66 km away
  3. 4.568 km N of Hihifo, Tonga · 1866 days ago · 133 km deep · 48 km away
  4. 4.9108 km NE of Hihifo, Tonga · 1859 days ago · 10 km deep · 21 km away
  5. 4.535 km N of Hihifo, Tonga · 1857 days ago · 83 km deep · 75 km away
  6. 4.692 km NNE of Hihifo, Tonga · 1852 days ago · 10 km deep · 42 km away
  7. 4.566 km E of Hihifo, Tonga · 1851 days ago · 35 km deep · 70 km away
  8. 4.7106 km NE of Hihifo, Tonga · 1849 days ago · 10 km deep · 26 km away
  9. 4.7124 km E of Hihifo, Tonga · 1848 days ago · 10 km deep · 91 km away
  10. 4.828 km N of Hihifo, Tonga · 1842 days ago · 59 km deep · 81 km away
  11. 4.995 km N of Hihifo, Tonga · 1842 days ago · 110 km deep · 73 km away · felt by 1
  12. 5.121 km NNE of Hihifo, Tonga · 1838 days ago · 67 km deep · 78 km away · felt by 3
  13. 4.3105 km NNE of Hihifo, Tonga · 1833 days ago · 149 km deep · 17 km away
  14. 4.371 km NE of Hihifo, Tonga · 1830 days ago · 35 km deep · 36 km away
  15. 4.6136 km NNE of Hihifo, Tonga · 1824 days ago · 10 km deep · 39 km away
  16. 5.8135 km SW of Gataivai, Samoa · 1824 days ago · 20 km deep · 71 km away · felt by 3
  17. 4.4129 km SW of Gataivai, Samoa · 1824 days ago · 10 km deep · 62 km away

Before

  1. 4.6105 km NNE of Hihifo, Tonga · 1886 days ago · 10 km deep · 28 km away
  2. 4.881 km NE of Hihifo, Tonga · 1891 days ago · 32 km deep · 25 km away · felt by 7
  3. 4.896 km N of Hihifo, Tonga · 1893 days ago · 93 km deep · 70 km away
  4. 5.085 km N of Hihifo, Tonga · 1893 days ago · 10 km deep · 63 km away
  5. 4.570 km N of Hihifo, Tonga · 1894 days ago · 74 km deep · 74 km away
  6. 4.5108 km NE of Hihifo, Tonga · 1901 days ago · 10 km deep · 10 km away
  7. 4.753 km ENE of Hihifo, Tonga · 1907 days ago · 35 km deep · 58 km away
  8. 5.075 km E of Hihifo, Tonga · 1909 days ago · 10 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000f5mr. Read Wed, Sep 30, 2026, 9:37 AM UTC.